Electromagnetics

News and Updates

NIST Scientists Reveal the Power Behind the Curtain — With Neutrons

September 16, 2020

In a potential step forward for imaging technology, scientists from the National Institute of Standards and Technology (NIST) and Sandia National Laboratories

Building a Better Lithium Ion Source to Build a Better FIB

April 22, 2019

Eight years ago, NIST researchers developed a groundbreaking microscope that uses a narrow beam of low-energy lithium ions, rather than a beam of light or

Transparent image shaped like wedding cake atop a honeycomb-like lattice with green squiggly lines

A Novel Graphene Quantum Dot Structure Takes the Cake

August 23, 2018

In a marriage of quantum science and solid-state physics, researchers at the National Institute of Standards and Technology (NIST) have used magnetic fields to

NIST’s Superconducting Synapse May Be Missing Piece for ‘Artificial Brains’

January 26, 2018

Researchers at the National Institute of Standards and Technology (NIST) have built a superconducting switch that “learns” like a biological system and could

Projects and Programs

Electric-acoustic spectroscopy for intermolecular interactions in solution

NIST’s Material Measurement Laboratory and Communications Technology Laboratory are developing a new spectroscopy for intermolecular interactions. The team is

Passive millimeter-wave image of concealed contraband (handgun and ceramic knife).

Terahertz Imaging and Sources

Imaging in the terahertz frequency range enables the detection of concealed weapons and other contraband (e.g., explosives under clothing) without the use of

Cyber Physical Systems and Internet of Things Program

The definitions of cyber-physical systems (CPS) and the Internet of Things (IoT) are converging over time to include a common emphasis on hybrid systems of

Noise Thermometry

The Noise Thermometry Project is applying quantum-based voltage waveform synthesis to a precision measurement of Boltzmann's constant kB by developing a primary

Publications

Noise Influence on Scattering-Parameter Measurements

November 4, 2020

Author(s)

Dazhen Gu, Jeffrey A. Jargon, Matthew J. Ryan, Anouk Hubrechsen

We present a general model of noise-influenced scattering (S) parameter measurements performed by a vector network analyzer (VNA). The residual error of the S

Note: A Radio Frequency Voltage-Controlled Current Source for Quantum Spin Manipulation

October 19, 2020

Author(s)

Daniel S. Barker, Alessandro Restelli, James A. Fedchak, Julia K. Scherschligt, Stephen P. Eckel

We present a design for a wide-bandwidth, voltage-controlled current source that is easily integrated with radiofrequency magnetic field coils. Our design uses

Josephson Arbitrary Waveform Synthesizer as a Reference Standard for the Calibration of Lock-in Amplifiers

August 24, 2020

Author(s)

Dimitrios Georgakopoulos, Ilya F. Budovsky, Samuel P. Benz

We have extended the voltage range of the Josephson arbitrary waveform synthesizer from 1 mV down to 1 μV at frequencies from 60 Hz to 1 kHz to calibrate

Blind Calibration of Phase Drift in Millimeter-Wave Channel Sounders

June 11, 2020

Author(s)

Jack Chuang, Jelena Senic, Chunmei Liu, Camillo A. Gentile, Sung Yun Jun, Derek C. Caudill

Millimeter-wave channel sounders are much more sensitive to phase drift than their microwave counterparts by virtue of shorter wavelength. This matters when

Software

On-Wafer Calibration Software

NIST Microwave Uncertainty Framework (Beta version) The NIST Microwave Uncertainty Framework provides a "drag-and-drop" toolkit for managing the calculation of

Tools and Instruments

Large Aperture Scanner

The Large Aperture Scanner (LAS) scans a radar transceiver over a 5 meter by 20 meter aperture. Image reconstruction techniques enable a three-dimensional